/// <summary>
/// Expands the <see cref="IBoundingBox"/>'s values.
/// </summary>
/// <param name="boundingBox"></param>
/// <param name="factor">0 for no expanding.</param>
public static void Expand(this IBoundingBox boundingBox, float factor = 0.1f)
{
if (boundingBox == null)
{
return;
}
vec3 min = boundingBox.MinPosition;
vec3 max = boundingBox.MaxPosition;
if (boundingBox.MaxPosition.x < min.x)
{
min.x = boundingBox.MaxPosition.x;
}
if (boundingBox.MaxPosition.y < min.y)
{
min.y = boundingBox.MaxPosition.y;
}
if (boundingBox.MaxPosition.z < min.z)
{
min.z = boundingBox.MaxPosition.z;
}
if (max.x < boundingBox.MinPosition.x)
{
max.x = boundingBox.MinPosition.x;
}
if (max.y < boundingBox.MinPosition.y)
{
max.y = boundingBox.MinPosition.y;
}
if (max.z < boundingBox.MinPosition.z)
{
max.z = boundingBox.MinPosition.z;
}
float distance = (float)((max - min).Magnitude() * factor);
vec3 vector = (max - min);
vector *= (1 + factor);
vec3 newMax = min + vector;
vec3 newMin = max - vector;
boundingBox.Set(newMin.x, newMin.y, newMin.z, newMax.x, newMax.y, newMax.z);
}
/// <summary>
/// Expands the <see cref="IBoundingBox"/>'s values.
/// </summary>
/// <param name="boundingBox"></param>
/// <param name="factor">0 for no expanding.</param>
public static void Expand(this IBoundingBox boundingBox, float factor = 0.1f)
{
if (boundingBox == null)
{
return;
}
Vertex min = boundingBox.MinPosition;
Vertex max = boundingBox.MaxPosition;
if (boundingBox.MaxPosition.X < min.X)
{
min.X = boundingBox.MaxPosition.X;
}
if (boundingBox.MaxPosition.Y < min.Y)
{
min.Y = boundingBox.MaxPosition.Y;
}
if (boundingBox.MaxPosition.Z < min.Z)
{
min.Z = boundingBox.MaxPosition.Z;
}
if (max.X < boundingBox.MinPosition.X)
{
max.X = boundingBox.MinPosition.X;
}
if (max.Y < boundingBox.MinPosition.Y)
{
max.Y = boundingBox.MinPosition.Y;
}
if (max.Z < boundingBox.MinPosition.Z)
{
max.Z = boundingBox.MinPosition.Z;
}
float distance = (float)((max - min).Magnitude() * factor);
Vertex vector = (max - min);
vector *= (1 + factor);
Vertex newMax = min + vector;
Vertex newMin = max - vector;
boundingBox.Set(newMin.X, newMin.Y, newMin.Z, newMax.X, newMax.Y, newMax.Z);
}